Author: bdragon
Date: Sun Sep 13 16:46:03 2020
New Revision: 365691
URL: https://svnweb.freebsd.org/changeset/base/365691
Log:
[PowerPC] Implement pmap_mincore() for moea
Do the same as previous for moea.
Tested on G4.
Modified:
head/sys/powerpc/aim/mmu_oea.c
Modified: head/sys/powerpc/aim/mmu_oea.c
==============================================================================
--- head/sys/powerpc/aim/mmu_oea.c Sun Sep 13 16:42:49 2020
(r365690)
+++ head/sys/powerpc/aim/mmu_oea.c Sun Sep 13 16:46:03 2020
(r365691)
@@ -114,6 +114,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kerneldump.h>
#include <sys/ktr.h>
#include <sys/lock.h>
+#include <sys/mman.h>
#include <sys/msgbuf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
@@ -126,6 +127,7 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/openfirm.h>
#include <vm/vm.h>
+#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
@@ -291,6 +293,7 @@ boolean_t moea_is_prefaultable(pmap_t, vm_offset_t);
boolean_t moea_is_referenced(vm_page_t);
int moea_ts_referenced(vm_page_t);
vm_offset_t moea_map(vm_offset_t *, vm_paddr_t, vm_paddr_t, int);
+static int moea_mincore(pmap_t, vm_offset_t, vm_paddr_t *);
boolean_t moea_page_exists_quick(pmap_t, vm_page_t);
void moea_page_init(vm_page_t);
int moea_page_wired_mappings(vm_page_t);
@@ -354,7 +357,8 @@ static struct pmap_funcs moea_methods = {
.qremove = moea_qremove,
.release = moea_release,
.remove = moea_remove,
- .remove_all = moea_remove_all,
+ .remove_all = moea_remove_all,
+ .mincore = moea_mincore,
.remove_write = moea_remove_write,
.sync_icache = moea_sync_icache,
.unwire = moea_unwire,
@@ -1924,6 +1928,50 @@ moea_remove_all(vm_page_t m)
}
vm_page_aflag_clear(m, PGA_WRITEABLE);
rw_wunlock(&pvh_global_lock);
+}
+
+static int
+moea_mincore(pmap_t pm, vm_offset_t va, vm_paddr_t *pap)
+{
+ struct pvo_entry *pvo;
+ vm_paddr_t pa;
+ vm_page_t m;
+ int val;
+ bool managed;
+
+ PMAP_LOCK(pm);
+
+ pvo = moea_pvo_find_va(pm, va & ~ADDR_POFF, NULL);
+ if (pvo != NULL) {
+ pa = PVO_PADDR(pvo);
+ m = PHYS_TO_VM_PAGE(pa);
+ managed = (pvo->pvo_vaddr & PVO_MANAGED) == PVO_MANAGED;
+ val = MINCORE_INCORE;
+ } else {
+ PMAP_UNLOCK(pm);
+ return (0);
+ }
+
+ PMAP_UNLOCK(pm);
+
+ if (m == NULL)
+ return (0);
+
+ if (managed) {
+ if (moea_is_modified(m))
+ val |= MINCORE_MODIFIED | MINCORE_MODIFIED_OTHER;
+
+ if (moea_is_referenced(m))
+ val |= MINCORE_REFERENCED | MINCORE_REFERENCED_OTHER;
+ }
+
+ if ((val & (MINCORE_MODIFIED_OTHER | MINCORE_REFERENCED_OTHER)) !=
+ (MINCORE_MODIFIED_OTHER | MINCORE_REFERENCED_OTHER) &&
+ managed) {
+ *pap = pa;
+ }
+
+ return (val);
}
/*
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